Vintage 14K or 12K gold filled necklace with natural pearl by designer Coro

Vintage delicate dainty necklace by a well known designer Coro. Stamped GF and Coro on the old style clasp. The most common practice back in the day was to use either 14 karat, or 12 Karat gold. With natural white pearl, possibly South Sea pearl. In excellent condition. 17" chain. 1.8 cm pendant (with bail). Gold filled vintage jewelry is considered valuable and collectible as it tends to be of better quality and also contains quite a bit of gold.